code: def test_camelize():
      assert camelize("variable_name") == "variableName"
      assert camelize("variableName") == "variableName"
      assert camelize("name") == "name"
      assert (
          camelize("very_long_variable_name") == "veryLongVariableName"
      )
  
file_path: folium/tests/test_utilities.py
imports: import numpy
  import pandas
  import pytest
  from folium import FeatureGroup, Map, Marker, Popup
  from folium.utilities import _is_url, camelize, deep_copy, escape_double_quotes, get_obj_in_upper_tree, if_pandas_df_convert_to_numpy, javascript_identifier_path_to_array_notation, parse_options, validate_location, validate_locations, validate_multi_locations
label_desc: Use image node_id 7 for calling a global function with example usage: test_camelize() without return types